LAN devices have no access to the parent LAN

[viktak]

Greetings to All!

OPNsense noob here. I just installed OPNsense on a thin client which has one built in NIC and an extra I put in. The built in on is configured as NAT, the other one is LAN.
I have the following topology in my home network:
ISP - ISP provided router - [Home network #1] - OPNsense - [Home network #2]

I have a few devices on Home network #1, but most of my devices are on Home network #2. I have managed to "migrate" all my settings from the old ways I was doing things (with OpenWRT), and most things work, but one thing is driving me crazy...:

Devices on Home network #2 don't "see" devices on Home network #1, even though they have internet access. This is probably a routing/firewall issue, I just can't understand what/why, since Home network #2 has internet access.

Any pointers are much appreciated!!!

v

[bartjsmit]

I have a few devices on Home network #1,

These devices need a static route to network #2 via OPNsense. If they are DHCP clients, you can push the route that way. If not, you'll need to configure them on each devices.

That will allow traffic from #2 to #1. You will need to punch holes through OPNsense for traffic the other way.

Bart...

[viktak]

Well, after a good night's sleep, this morning it is working fine, i.e. network #2 can access network #1 just like before, and i did not make any change....

Thanks for your idea though, I'm trying to learn as much as I can on opnsense....